Fluorinated and Methylated ortho-Benzodipyrrole-Based Acceptors Suppressing Charge Recombination and Minimizing Energy Loss in Organic Photovoltaics DOI Creative Commons
Yanbo Wang,

Chia‐Lin Tsai,

Yung‐Jing Xue

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The elimination of the A' unit from -type Y6-derivatives has led to development a new class ortho-benzodipyrrole (o-BDP)-based A-DNBND-A-type NFAs. In this work, two NFAs, denoted as CFB and CMB, are designed synthesized, where electron-withdrawing fluorine atoms electron-donating methyl groups substituted on benzene ring o-BDP moiety, respectively. exhibits blue-shifted absorption spectrum, stronger intermolecular interactions, shorter π-π stacking distances, more ordered 3D packing in neat blend films, enabling it effectively suppress charge recombination PM6:CFB device showing higher PCE 16.55% with an FF 77.45%. CMB displays HOMO/LUMO energy level, smaller optical bandgap, less packing, which contributes its superior ability loss PM6:CMB high V oc 0.90 16.46%. To leverage advantages ternary PM6:Y6-16:CFB PM6:Y6-16:CMB devices fabricated. highest 17.83% increased 0.86 J sc 27.32 mA cm-2, while displayed elevated 0.87 improved 74.71%, leading 17.44%. was achieved using non-halogenated greener solvent o-xylene, highlighting their potential for facilitating eco-friendly processing procedures. C-shaped disubstituted o-BDP-based A-D-A type acceptors open up avenues tailoring electronic properties molecular self-assembly, achieving OPV performance enhanced suppression reduced loss.

Language: Английский

Fluorinated and Methylated ortho-Benzodipyrrole-Based Acceptors Suppressing Charge Recombination and Minimizing Energy Loss in Organic Photovoltaics DOI Creative Commons
Yanbo Wang,

Chia‐Lin Tsai,

Yung‐Jing Xue

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The elimination of the A' unit from -type Y6-derivatives has led to development a new class ortho-benzodipyrrole (o-BDP)-based A-DNBND-A-type NFAs. In this work, two NFAs, denoted as CFB and CMB, are designed synthesized, where electron-withdrawing fluorine atoms electron-donating methyl groups substituted on benzene ring o-BDP moiety, respectively. exhibits blue-shifted absorption spectrum, stronger intermolecular interactions, shorter π-π stacking distances, more ordered 3D packing in neat blend films, enabling it effectively suppress charge recombination PM6:CFB device showing higher PCE 16.55% with an FF 77.45%. CMB displays HOMO/LUMO energy level, smaller optical bandgap, less packing, which contributes its superior ability loss PM6:CMB high V oc 0.90 16.46%. To leverage advantages ternary PM6:Y6-16:CFB PM6:Y6-16:CMB devices fabricated. highest 17.83% increased 0.86 J sc 27.32 mA cm-2, while displayed elevated 0.87 improved 74.71%, leading 17.44%. was achieved using non-halogenated greener solvent o-xylene, highlighting their potential for facilitating eco-friendly processing procedures. C-shaped disubstituted o-BDP-based A-D-A type acceptors open up avenues tailoring electronic properties molecular self-assembly, achieving OPV performance enhanced suppression reduced loss.

Language: Английский

Citations

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